     8  (   (            	                                                        #   asus,rk3288-tinker rockchip,rk3288           &         "   7Rockchip RK3288 Asus Tinker Board      aliases          =/ethernet@ff290000           G/pinctrl/gpio@ff750000           M/pinctrl/gpio@ff780000           S/pinctrl/gpio@ff790000           Y/pinctrl/gpio@ff7a0000           _/pinctrl/gpio@ff7b0000           e/pinctrl/gpio@ff7c0000           k/pinctrl/gpio@ff7d0000           q/pinctrl/gpio@ff7e0000           w/pinctrl/gpio@ff7f0000           }/i2c@ff650000            /i2c@ff140000            /i2c@ff660000            /i2c@ff150000            /i2c@ff160000            /i2c@ff170000            /serial@ff180000             /serial@ff190000             /serial@ff690000             /serial@ff1b0000             /serial@ff1c0000             /spi@ff110000            /spi@ff120000            /spi@ff130000         arm-pmu          arm,cortex-a12-pmu        0                                                                      cpus                                       rockchip,rk3066-smp                cpu@500         cpu          arm,cortex-a12                                    "           6           E              L  r        f   	        r         cpu@501         cpu          arm,cortex-a12                                  "           6           E              L  r        r         cpu@502         cpu          arm,cortex-a12                                  "           6           E              L  r        r         cpu@503         cpu          arm,cortex-a12                                  "           6           E              L  r        r            opp-table-0          operating-points-v2          z        r      opp-126000000                                  @      opp-216000000                               opp-312000000                               opp-408000000               Q                opp-600000000               #F                opp-696000000               )|          ~      opp-816000000               0,          B@      opp-1008000000              <                opp-1200000000              G                opp-1416000000              Tfr          O      opp-1512000000              ZJ                 opp-1608000000              _"          p      opp-1704000000              e          p      opp-1800000000              kI          \         reserved-memory                                      dma-unusable@fe000000                                  oscillator           fixed-clock         n6         xin24m                      r   
      timer            arm,armv7-timer                0                                 
          n6                timer@ff810000           rockchip,rk3288-timer                                         H           E     a   
        pclk timer        display-subsystem            rockchip,display-subsystem          )            mmc@ff0c0000             rockchip,rk3288-dw-mshc         /р         E           D      r      v        biu ciu ciu-drive ciu-sample            =                                           @                       Hreset           Tokay            [            e         w                          default                                                 mmc@ff0d0000             rockchip,rk3288-dw-mshc         /         E           E      s      w        biu ciu ciu-drive ciu-sample            =                   !                       @                       Hreset           Tokay            [            w                                              default                              
                  $                            mmc@ff0e0000             rockchip,rk3288-dw-mshc         /р         E           F      t      x        biu ciu ciu-drive ciu-sample            =                   "                       @                       Hreset         	  Tdisabled          mmc@ff0f0000             rockchip,rk3288-dw-mshc         /р         E           G      u      y        biu ciu ciu-drive ciu-sample            =                   #                       @                       Hreset         	  Tdisabled          saradc@ff100000          rockchip,saradc                                      $           1           E      I     [        saradc apb_pclk               W        Hsaradc-apb          Tokay            C         spi@ff110000          (   rockchip,rk3288-spi rockchip,rk3066-spi         E      A     R        spiclk apb_pclk         O                    Ttx rx                   ,           default                                                                          	  Tdisabled          spi@ff120000          (   rockchip,rk3288-spi rockchip,rk3066-spi         E      B     S        spiclk apb_pclk         O                    Ttx rx                   -           default                !   "   #                                                     	  Tdisabled          spi@ff130000          (   rockchip,rk3288-spi rockchip,rk3066-spi         E      C     T        spiclk apb_pclk         O                    Ttx rx                   .           default            $   %   &   '                                                     	  Tdisabled          i2c@ff140000             rockchip,rk3288-i2c                                      >                                     i2c         E     M        default            (      	  Tdisabled          i2c@ff150000             rockchip,rk3288-i2c                                      ?                                     i2c         E     O        default            )      	  Tdisabled          i2c@ff160000             rockchip,rk3288-i2c                                      @                                     i2c         E     P        default            *      	  Tdisabled          i2c@ff170000             rockchip,rk3288-i2c                                      A                                     i2c         E     Q        default            +        Tokay            r   p      serial@ff180000       &   rockchip,rk3288-uart snps,dw-apb-uart                                        7           ^           h           E      M     U        baudclk apb_pclk            O                    Ttx rx           default            ,        Tokay          serial@ff190000       &   rockchip,rk3288-uart snps,dw-apb-uart                                        8           ^           h           E      N     V        baudclk apb_pclk            O                    Ttx rx           default            -        Tokay          serial@ff690000       &   rockchip,rk3288-uart snps,dw-apb-uart               i                         9           ^           h           E      O     W        baudclk apb_pclk            default            .        Tokay          serial@ff1b0000       &   rockchip,rk3288-uart snps,dw-apb-uart                                        :           ^           h           E      P     X        baudclk apb_pclk            O                    Ttx rx           default            /        Tokay          serial@ff1c0000       &   rockchip,rk3288-uart snps,dw-apb-uart                                        ;           ^           h           E      Q     Y        baudclk apb_pclk            O      	      
        Ttx rx           default            0        Tokay          dma-controller@ff250000          arm,pl330 arm,primecell             %        @                                      u                             E            	  apb_pclk            r         thermal-zones      reserve-thermal                                1          cpu-thermal            d                     1      trips      cpu_alert0           p                  passive         r   2      cpu_alert1           $                  passive         r   3      cpu_crit             _                	  critical             cooling-maps       map0               2      0                                map1               3      0                          gpu-thermal            d                     1      trips      gpu_alert0           p                  passive         r   4      gpu_crit             _                	  critical             cooling-maps       map0               4           5               tsadc@ff280000           rockchip,rk3288-tsadc               (                         %           E      H     Z        tsadc apb_pclk                      
  Htsadc-apb           init default sleep             6           7           6        %           ;   8        H s        Tokay            _           v           r   1      ethernet@ff290000            rockchip,rk3288-gmac                )                                              macirq eth_wake_irq         ;   8      8  E            f      g      c                 ]      M  stmmaceth mac_clk_rx mac_clk_tx clk_mac_ref clk_mac_refout aclk_mac pclk_mac                  B      
  Hstmmaceth           Tokay                             9        input           rgmii              :        default            ;           <                              ' B@        $   0        -         usb@ff500000             generic-ehci                P                                    E             6   =        ;usb         Tokay          usb@ff520000             generic-ohci                R                         )           E             6   =        ;usb       	  Tdisabled          usb@ff540000          2   rockchip,rk3288-usb rockchip,rk3066-usb snps,dwc2               T                                    E             otg         Ehost            6   >      	  ;usb2-phy             M        Tokay          usb@ff580000          2   rockchip,rk3288-usb rockchip,rk3066-usb snps,dwc2               X                                    E             otg         Eotg         d           v                      @   @            6   ?      	  ;usb2-phy            Tokay          usb@ff5c0000             generic-ehci                \                                    E           	  Tdisabled          dma-controller@ff600000          arm,pl330 arm,primecell             `        @                                       u                             E            	  apb_pclk          	  Tdisabled          i2c@ff650000             rockchip,rk3288-i2c             e                         <                                     i2c         E     L        default            @        Tokay                pmic@1b          rockchip,rk808                      &   A                                  xin32k rk808-clkout2               A          A               default            B   C   D   E                             F           F           F           F           F        	   F                   !           -           :   F        G           T           r      regulators     DCDC_REG1            a         u         q         \        vdd_arm           p        r   	   regulator-state-mem                   DCDC_REG2            a         u         P                 vdd_gpu           p        r   u   regulator-state-mem                   B@         DCDC_REG3            a         u        vcc_ddr    regulator-state-mem                   DCDC_REG4            a         u         2Z         2Z        vcc_io          r      regulator-state-mem                   2Z         LDO_REG1             a         u         w@         w@        vcc18_ldo1          r      regulator-state-mem                   w@         LDO_REG2             a         u         2Z         2Z        vcc33_mipi     regulator-state-mem                   LDO_REG3             a         u         B@         B@        vdd_10     regulator-state-mem                   B@         LDO_REG4             a         u         w@         w@        vcc18_codec    regulator-state-mem                   w@         LDO_REG5             a         u         w@         2Z      	  vccio_sd            r      regulator-state-mem                   2Z         LDO_REG6             a         u         B@         B@      
  vdd10_lcd      regulator-state-mem                   B@         LDO_REG7             a         u         w@         w@        vcc_18          r      regulator-state-mem                   w@         LDO_REG8             a         u         w@         w@      
  vcc18_lcd      regulator-state-mem                   w@         SWITCH_REG1          a         u      	  vcc33_sd            r      regulator-state-mem                   SWITCH_REG2          a         u      
  vcc33_lan           r   :   regulator-state-mem                            i2c@ff660000             rockchip,rk3288-i2c             f                         =                                     i2c         E     N        default            G        Tokay          pwm@ff680000             rockchip,rk3288-pwm             h                 (           default            H        E     _        Tokay          pwm@ff680010             rockchip,rk3288-pwm             h                (           default            I        E     _      	  Tdisabled          pwm@ff680020             rockchip,rk3288-pwm             h                 (           default            J        E     _      	  Tdisabled          pwm@ff680030             rockchip,rk3288-pwm             h 0               (           default            K        E     _      	  Tdisabled          sram@ff700000         
   mmio-sram               p                                                 p       smp-sram@0           rockchip,rk3066-smp-sram                            sram@ff720000         #   rockchip,rk3288-pmu-sram mmio-sram              r               power-management@ff730000         &   rockchip,rk3288-pmu syscon simple-mfd               s                 r      power-controller          !   rockchip,rk3288-power-controller            3                                     r   ]   power-domain@9             	        E                                                                                   c     h     g     f     d     e      h      i      l      k      j      $  G   L   M   N   O   P   Q   R   S   T        3          power-domain@11                    E            o      p        G   U   V        3          power-domain@12                    E                   G   W        3          power-domain@13                    E              G   X   Y        3             reboot-mode          syscon-reboot-mode          N           URB         aRB        oRB	        RB         syscon@ff740000          rockchip,rk3288-sgrf syscon             t               clock-controller@ff760000            rockchip,rk3288-cru             v                 E   
        xin24m          ;   8                            H                                    j                k      $  #gׄ e  рxh рxh        r         syscon@ff770000       &   rockchip,rk3288-grf syscon simple-mfd               w                 r   8   edp-phy          rockchip,rk3288-dp-phy          E      h        24m                   	  Tdisabled            r   m      io-domains        "   rockchip,rk3288-io-voltage-domain           Tokay                                usbphy           rockchip,rk3288-usb-phy                                   Tokay       usb-phy@320                                E      ]        phyclk                                  
  Hphy-reset           r   ?      usb-phy@334                       4        E      ^        phyclk                                  
  Hphy-reset           r   =      usb-phy@348                       H        E      _        phyclk                                  
  Hphy-reset           r   >            watchdog@ff800000             rockchip,rk3288-wdt snps,dw-wdt                              E     p                O           Tokay          sound@ff8b0000        ,   rockchip,rk3288-spdif rockchip,rk3066-spdif                                          E      T           
  mclk hclk           O   Z           Ttx                  6           default            [        ;   8      	  Tdisabled          i2s@ff890000          (   rockchip,rk3288-i2s rockchip,rk3066-i2s                                                  5           E      R             i2s_clk i2s_hclk            O   Z       Z           Ttx rx           default            \                              Tokay            r         crypto@ff8a0000          rockchip,rk3288-crypto                      @                 0            E                 }              aclk hclk sclk apb_pclk                       Hcrypto-rst        iommu@ff900800           rockchip,iommu                      @                           E                   aclk iface                    	  Tdisabled          iommu@ff914000           rockchip,iommu               @            P                                   E                   aclk iface                       %      	  Tdisabled          rga@ff920000             rockchip,rk3288-rga                                                E                 j        aclk hclk sclk          @   ]   	              i      l      m        Hcore axi ahb          vop@ff930000             rockchip,rk3288-vop                                                             E                         aclk_vop dclk_vop hclk_vop          @   ]   	              d      e      f        Haxi ahb dclk            N   ^        Tokay       port                                      r      endpoint@0                      U   _        r   q      endpoint@1                     U   `        r   n      endpoint@2                     U   a        r   h      endpoint@3                     U   b        r   k            iommu@ff930300           rockchip,iommu                                                 E                   aclk iface          @   ]   	                    Tokay            r   ^      vop@ff940000             rockchip,rk3288-vop                                                             E                         aclk_vop dclk_vop hclk_vop          @   ]   	                                  Haxi ahb dclk            N   c        Tokay       port                                      r      endpoint@0                      U   d        r   r      endpoint@1                     U   e        r   o      endpoint@2                     U   f        r   i      endpoint@3                     U   g        r   l            iommu@ff940300           rockchip,iommu                                                 E                   aclk iface          @   ]   	                    Tokay            r   c      dsi@ff960000          *   rockchip,rk3288-mipi-dsi snps,dw-mipi-dsi                       @                            E      ~     d      	  ref pclk            @   ]   	        ;   8      	  Tdisabled       ports                                port@0                                           endpoint@0                      U   h        r   a      endpoint@1                     U   i        r   f         port@1                         lvds@ff96c000            rockchip,rk3288-lvds                       @         E     g      
  pclk_lvds           lcdc               j        @   ]   	        ;   8      	  Tdisabled       ports                                port@0                                           endpoint@0                      U   k        r   b      endpoint@1                     U   l        r   g         port@1                         dp@ff970000          rockchip,rk3288-dp                      @                 b                 h           
        E      i     c        dp pclk         6   m        ;dp          @   ]   	              o        Hdp          ;   8      	  Tdisabled       ports                                port@0                                           endpoint@0                      U   n        r   `      endpoint@1                     U   o        r   e         port@1                         hdmi@ff980000            rockchip,rk3288-dw-hdmi                              h                   g           E     h      m      n        iahb isfr cec           @   ]   	        ;   8                    Tokay            e   p        r      ports                                port@0                                           endpoint@0                      U   q        r   _      endpoint@1                     U   r        r   d         port@1                         video-codec@ff9a0000             rockchip,rk3288-vpu                                      	          
         
  vepu vdpu           E                 
  aclk hclk           N   s        @   ]         iommu@ff9a0800           rockchip,iommu                                                 E                   aclk iface                      @   ]           r   s      iommu@ff9c0440           rockchip,iommu               @       @           @                o           E                   aclk iface                    	  Tdisabled          gpu@ffa30000          #   rockchip,rk3288-mali arm,mali-t760                             $                                         job mmu gpu         E              "   t        6           @   ]           Tokay            q   u        r   5      opp-table-1          operating-points-v2         r   t   opp-100000000                         ~      opp-200000000                         ~      opp-300000000                         B@      opp-400000000               ׄ                opp-600000000               #F                   qos@ffaa0000             rockchip,rk3288-qos syscon                                r   X      qos@ffaa0080             rockchip,rk3288-qos syscon                               r   Y      qos@ffad0000             rockchip,rk3288-qos syscon                                r   M      qos@ffad0100             rockchip,rk3288-qos syscon                               r   N      qos@ffad0180             rockchip,rk3288-qos syscon                              r   O      qos@ffad0400             rockchip,rk3288-qos syscon                               r   P      qos@ffad0480             rockchip,rk3288-qos syscon                              r   Q      qos@ffad0500             rockchip,rk3288-qos syscon                               r   L      qos@ffad0800             rockchip,rk3288-qos syscon                               r   R      qos@ffad0880             rockchip,rk3288-qos syscon                              r   S      qos@ffad0900             rockchip,rk3288-qos syscon              	                 r   T      qos@ffae0000             rockchip,rk3288-qos syscon                                r   W      qos@ffaf0000             rockchip,rk3288-qos syscon                                r   U      qos@ffaf0080             rockchip,rk3288-qos syscon                               r   V      dma-controller@ffb20000          arm,pl330 arm,primecell                     @                                       u                             E            	  apb_pclk            r   Z      efuse@ffb40000           rockchip,rk3288-efuse                                                          E     q        pclk_efuse     cpu-id@7                        cpu_leakage@17                         interrupt-controller@ffc01000            arm,gic-400          }                               @                                @             `                        	          r         pinctrl          rockchip,rk3288-pinctrl         ;   8                                                 gpio@ff750000            rockchip,gpio-bank              u                         Q           E     @                             }                   r   A      gpio@ff780000            rockchip,gpio-bank              x                         R           E     A                             }                   r   ~      gpio@ff790000            rockchip,gpio-bank              y                         S           E     B                             }                 gpio@ff7a0000            rockchip,gpio-bank              z                         T           E     C                             }                 gpio@ff7b0000            rockchip,gpio-bank              {                         U           E     D                             }                   r   <      gpio@ff7c0000            rockchip,gpio-bank              |                         V           E     E                             }                 gpio@ff7d0000            rockchip,gpio-bank              }                         W           E     F                             }                 gpio@ff7e0000            rockchip,gpio-bank              ~                         X           E     G                             }                   r         gpio@ff7f0000            rockchip,gpio-bank                                       Y           E     H                             }                 hdmi       hdmi-cec-c0                     v      hdmi-cec-c7                     v      hdmi-ddc                         v            v      hdmi-ddc-unwedge                          w            v         pcfg-output-low                  r   w      pcfg-pull-up                     r   x      pcfg-pull-down                   r   y      pcfg-pull-none                   r   v      pcfg-pull-none-12ma                  	           r   |      suspend    global-pwroff                         v        r   C      ddrio-pwroff                         v      ddr0-retention                       x      ddr1-retention                       x         edp    edp-hpd                     y         i2c0       i2c0-xfer                         v             v        r   @         i2c1       i2c1-xfer                        v            v        r   (         i2c2       i2c2-xfer                  	      v      
      v        r   G         i2c3       i2c3-xfer                        v            v        r   )         i2c4       i2c4-xfer                        v            v        r   *         i2c5       i2c5-xfer                        v            v        r   +         i2s0       i2s0-bus          `               v            v            v            v            v            v        r   \         lcdc       lcdc-ctl          @              v            v            v            v        r   j         sdmmc      sdmmc-clk                       z        r         sdmmc-cmd                       {        r         sdmmc-cd                        x        r         sdmmc-bus1                      x      sdmmc-bus4        @              {            {            {            {        r         sdmmc-pwr                        v        r            sdio0      sdio0-bus1                      x      sdio0-bus4        @              x            x            x            x        r         sdio0-cmd                       x        r         sdio0-clk                       v        r         sdio0-cd                        x      sdio0-wp                        x      sdio0-pwr                       x      sdio0-bkpwr                     x      sdio0-int                       x        r            sdio1      sdio1-bus1                      x      sdio1-bus4        @              x            x            x            x      sdio1-cd                        x      sdio1-wp                        x      sdio1-bkpwr                     x      sdio1-int                       x      sdio1-cmd                       x      sdio1-clk                       v      sdio1-pwr                 	      x         emmc       emmc-clk                        v      emmc-cmd                        x      emmc-pwr                  	      x      emmc-bus1                        x      emmc-bus4         @               x            x            x            x      emmc-bus8                        x            x            x            x            x            x            x            x         spi0       spi0-clk                        x        r         spi0-cs0                        x        r         spi0-tx                     x        r         spi0-rx                     x        r         spi0-cs1                        x         spi1       spi1-clk                        x        r          spi1-cs0                        x        r   #      spi1-rx                     x        r   "      spi1-tx                     x        r   !         spi2       spi2-cs1                        x      spi2-clk                        x        r   $      spi2-cs0                        x        r   '      spi2-rx                     x        r   &      spi2-tx               	      x        r   %         uart0      uart0-xfer                       x            v        r   ,      uart0-cts                       x      uart0-rts                       v         uart1      uart1-xfer                       x      	      v        r   -      uart1-cts                 
      x      uart1-rts                       v         uart2      uart2-xfer                       x            v        r   .         uart3      uart3-xfer                       x            v        r   /      uart3-cts                 	      x      uart3-rts                 
      v         uart4      uart4-xfer                       x            v        r   0      uart4-cts                       x      uart4-rts                       v         tsadc      otp-pin                
       v        r   6      otp-out                
      v        r   7         pwm0       pwm0-pin                         v        r   H         pwm1       pwm1-pin                        v        r   I         pwm2       pwm2-pin                        v        r   J         pwm3       pwm3-pin                        v        r   K         gmac       rgmii-pins                      v            v            v            v            |            |            |            |             v            v            v      	      |            |            v            v        r   ;      rmii-pins                       v            v            v            v             v            v            v            v            v            v         spdif      spdif-tx                        v        r   [         pcfg-pull-none-drv-8ma          	           r   z      pcfg-pull-up-drv-8ma                     	           r   {      backlight      bl-en                        v         buttons    pwrbtn                        x        r   }         eth_phy    eth-phy-pwr                       v         pmic       pmic-int                          x        r   B      dvs-1                         y        r   D      dvs-2                         y        r   E         usb    host-vbus-drv                         v      pwr-3g                       v         sdio       wifi-enable                       v             v        r               chosen          	serial2:115200n8          memory                                 memory        external-gmac-clock          fixed-clock                     sY@      	  ext_gmac            r   9      gpio-keys         
   gpio-keys            	        default            }   button             A              	'   t        	2GPIO Key Power          	8                    	I   d         gpio-leds         
   gpio-leds      led-0              ~               	[mmc0          led-1              ~             
  	[heartbeat         led-2              A               	[default-on           sdio-pwrseq          mmc-pwrseq-simple           E            
  ext_clock           default                    	q   <         <              r         sound            simple-audio-card           	}i2s         	rockchip,tinker-codec           	      simple-audio-card,codec         	         simple-audio-card,cpu           	            regulator-vsys           regulator-fixed         vcc_sys          LK@         LK@         a         u        r   F      regulator-sdmmc          regulator-fixed                          default                    vcc_sd           2Z         2Z        	         	            	#address-cells #size-cells compatible interrupt-parent model ethernet0 gpio0 gpio1 gpio2 gpio3 gpio4 gpio5 gpio6 gpio7 gpio8 i2c0 i2c1 i2c2 i2c3 i2c4 i2c5 serial0 serial1 serial2 serial3 serial4 spi0 spi1 spi2 interrupts interrupt-affinity enable-method rockchip,pmu device_type reg resets operating-points-v2 #cooling-cells clocks dynamic-power-coefficient cpu0-supply phandle opp-shared opp-hz opp-microvolt clock-latency-ns ranges clock-frequency clock-output-names #clock-cells arm,cpu-registers-not-fw-configured arm,no-tick-in-suspend clock-names ports max-frequency fifo-depth reset-names status bus-width cap-mmc-highspeed cap-sd-highspeed broken-cd disable-wp pinctrl-names pinctrl-0 vmmc-supply vqmmc-supply cap-sdio-irq keep-power-in-suspend mmc-pwrseq non-removable sd-uhs-sdr12 sd-uhs-sdr25 sd-uhs-sdr50 #io-channel-cells vref-supply dmas dma-names reg-shift reg-io-width #dma-cells arm,pl330-broken-no-flushp arm,pl330-periph-burst polling-delay-passive polling-delay thermal-sensors temperature hysteresis trip cooling-device pinctrl-1 pinctrl-2 #thermal-sensor-cells rockchip,grf rockchip,hw-tshut-temp rockchip,hw-tshut-mode rockchip,hw-tshut-polarity interrupt-names assigned-clocks assigned-clock-parents clock_in_out phy-mode phy-supply snps,reset-gpio snps,reset-active-low snps,reset-delays-us tx_delay rx_delay phys phy-names dr_mode snps,reset-phy-on-wake g-np-tx-fifo-size g-rx-fifo-size g-tx-fifo-size dvs-gpios rockchip,system-power-controller wakeup-source vcc1-supply vcc2-supply vcc3-supply vcc4-supply vcc6-supply vcc7-supply vcc8-supply vcc9-supply vcc10-supply vcc11-supply vcc12-supply vddio-supply regulator-always-on regulator-boot-on regulator-min-microvolt regulator-max-microvolt regulator-name regulator-ramp-delay regulator-off-in-suspend regulator-on-in-suspend regulator-suspend-microvolt #pwm-cells #power-domain-cells pm_qos offset mode-normal mode-recovery mode-bootloader mode-loader #reset-cells assigned-clock-rates #phy-cells sdcard-supply wifi-supply #sound-dai-cells rockchip,playback-channels rockchip,capture-channels #iommu-cells rockchip,disable-mmu-reset power-domains iommus remote-endpoint ddc-i2c-bus mali-supply interrupt-controller #interrupt-cells gpio-controller #gpio-cells rockchip,pins output-low bias-pull-up bias-pull-down bias-disable drive-strength stdout-path autorepeat linux,code label linux,input-type debounce-interval linux,default-trigger reset-gpios simple-audio-card,format simple-audio-card,name simple-audio-card,mclk-fs sound-dai startup-delay-us vin-supply 